I have a class as follows [ElasticsearchType(Name = "foo", IdProperty = "Id")] public class Foo { [String(Index = FieldIndexOption.NotAnalyzed)] public Guid Id { get; set; } } and on index, mapping is { "mappings": { "foo": { "properties": { …

Attribute based mapping ignores FieldIndexOption value

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Attribute based mapping ignores FieldIndexOption value